A thin-walled, cantilever beam with unsymmetrical cross-section is loaded with 500.0N and 250.0N applied at its free end as shown. Obtain: a) location of the centroid, b) second moments and product of inertia, stresses at a cross section half way along the beam in points 4, B. D and E, and the neutral axis angle, d) show results from c) on your diagram of the cross section. 500N 250N tr 1250mm 90mm 40mm 3.5mm 2.5mm 2.0mm 70mm